Car-truck bolster.



PATENTED JAN. 8, 1907;

H. P. FIELD, JR. GAR TRUCK BOLSTER. APPLICATION FILED Nov. 9, 1906.

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.ATTORNEY No. 840,834. Y PATENTED JAN. 8, 1907. H. P. FIELD, JR.

CAR TRUCK BoLsTBR.

APPLIUATION FILED NOV.9, 1906.

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GAR TRUCK BOLSTBR. APPLICATION FILED NOV. 9'. 1906.

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*UNITED sTA-rEs PATENT OFFICE.

:HENRY P. FIELD, fJR.; OF IBERWICK, PENNSYLVANIA, ASSIGNOR TO BENJAMIN A. ILIEGEIVIAN,Av J It., OF N @RTI-l PLAINFIELD, INEW' JERSEY.

"Patented Jan; 8, 1907.

Application filed November 9, 1906. Serial No. 342,601.

To all /'wmit may concern: e

Be it knownthat I, HENRY P. FIELD, Jr., a citizenofthe United States, and a resident of Berwick, in the county "of Columbia `and State of Pennsylv ania,I have invented certain new land useful Improvementsfin Car-Truck Bolsters, of which the following is a specilication.

The invention relates to improvements in car-truck bolsters; rand it consists `in :the novel features, arrangements, `and combinations of parts hereinafter described, and particularly-pointed' out inthe claims.

The object fof the invention is to produce a highly-eiiicient bolster capable `of ready `manufacture and `possessing `great-strength and v rigidity and designed to meet all: of the conditions which may be imposed upon it in service offthe roughest kind. l

In the preferredconstruction the bolster of my invention comprises a pressed-steel top or compression member of suchshape as'to oifer the `greatest resistance to compression, a bottom or tension member 4of pressed steel, avcentral strut funderthe center plate, end castings to. servefas bearings forthesprings and furnish column-guides and valso to strengthen and. stiffen the joints betweenthe top and bottommembers atithe ends ofthe bolster, and inner plates secured tothe sides of the top member, tothe bottom member, and to said 'end castings and disposed below the usual location for the sideibearings. The top and bottom members and inner connections are made from open-hearthsteel plates, and thecentralistrut and end cast ings are shown as formed of vmalleable' iron, but may be made of open-hearth steel, if desired, althoughit is more vadvantageous to lconstruct said end castings ofmalleable iron in order to vroduce integralicolumn-guides on the vertica sidesthereof-andopen pockets at the bottom thereof to receive wooden blocksforthe upperends of the springs.

The I invention will be` I fully understood from the'detailed description hereinafter presented, 'reference beinghad tothe accompanying drawings, in which- Figure 1 is a side elevation, with one longitudinal half in central vertical section, of a bolster constructed in accordance withand embodying my invention. Fig. 2is a top `ted line 3 3 of Fig. 1.

the' dottedV line 4 4 of Fig. I. vlarged central vertical longitudinal section of view oi sameythe dotted line l 1 denoting the cut on which the sectional portion of Fig. 1 is taken. Fig. 3 is an enlarged vertical transverse section of same, taken on the dot- Fig. 4 is anenlarged verticaltransverse section of same, taken on onefendvportion oflthe bolsteiytaken on the dotted line 5 5 of Fig. 6; and Fig. 6 is a top view,-partly broken away and partlyi in secvtion, of same.

flanges 26 attheir lower edges, said flanges being' widest at ytheir central` portions vand thence taperingI inwardly toward their ends, which are at a convenient distance from the inner edges of the end castings 23. The

1 iianges 26 by Jfollowing the lowervedges ofthe sides 25 form upwardly-bowed arches and very greatly strengthen the bolster. At its ends the 'top ofthe compressionk member is iiangedv upwardly, as at 27.

The tension-member 2l is a. plain-steel downwardly-'arched plate of uniform width, andfromfits cen-ter below the central strut said plate extends upwardly toward the ends of the bolster, at its end portions ypassing `upwardly between the inclined edges of the sides 25 ofy the compression member and at its extreme ends being flanged, as at 28,l to match and engage the flanges 27 at the eXtreme ends of `said compression member. The tension member 21 inclines upwardly from its center towardthe inner lower ends of the castings 23 or the lowerend edges of the sides 25 at one angle and then extends upwardly between said sides to the flanges28 at a more abrupt angle, as shown.

The end castings 23 areof boX shape open at' their top and inner end and each comprising a solid outer end 29, vertical sides30, and bottom 3-1, and said castings arev adapted to Fig. 5 is an en- IOO pass upon the ends ofthe bolster. The ends 29 of the end castings extend upwardly to the upper edges of the flanges 27 28 of the compression and tension members and are secured thereto by rivets 32, these rivets securely fastening the compression and tension members and end castings together at the upper end portions of the bolster. The outline of the sides 30 of the end castings is clearly illustrated at the left-hand end of Fig. 1, and these sides are securely riveted to the sides of the compression member by means of rivets 33, which in addition to passing through the sides of the end castings and the sides of the compression member also pass through the vertical sides of the inner angle-plate connections 24, which, as shown in Figs. 5 and 6, are located one at each side of the center of the bolster at each end of the latter and are secured by the said rivets 33 and also by rivets 34 and 35, the latter `firmly securing the lower members of said connections 24 to the tension member 21, and the rivets 34 securing the vertical sides of said connections 24 to the sides of the compression member 20, while the rivets 33 secure the vertical sides of said inner connections 24 to the said sides of the compression member and also to the sides of the end castings 23, whereby the parts of the end portions of the bolster become very rigidly and durably secured together. The ends 29 of the end castings extend upwardly above the sides 30 thereof to match and engage the flange 28 of the tension member, while the upper edges of the outer portion of said sides 30 terminate slightly below the upper surface 'of the compression member. The sides 30 of -the 'end castings are formed integrally with vertical flanges 36, which afford the usual column-guides. The bottom of each end 'casting'23 is formed with a downwardly-extending flange 37, which is of box outline and adapted to receive the block 33 for the upper ends of the usual carrying-springs, those portions of the end castings receiving the blocks 38 forming inverted pockets or receptacles therefor and being-horizontal, as shown in Figs. 1 and 5, while at the side edges of the inner end of the bottom 31 of each end casting are formed inwardly and downwardly extending flange portions 39, which engage the lower inclined surface of the tension member 21 and are secured thereto by some ofthe rivets 35, which secure the inner connections 24 to the said tension member. The end castings 23 are thus secured by the rivets 32 to the compression and tension members, by the rivets 33 to the sides of the compression member and vertical sides of the inner connections 24, and by rivets 35 to the tension member and said inner connections. The inner connections 24 are below the locations for the usual side bearings, and they are secured by the rivets 33, 34, and 35 to the compression and tension members and to the end castings.

The end members 23 are preferably cast with inner projections or lugs 50 to form seats for the lower edges of the sides 25 of the compression member and for the tension member, as shown in Figs. 4 and 5.

The central strut 22 is disposed between the top of the compression member and the upper surface of the tension member directly below the standard center bearing 40, and this strut is secured by the rivets 41, by which said center plate is secured upon the compression member. The strut 22 comprises a top plate 42, base 43, vertical sides 44, Fig. 3, and vertical partitions 45, which with said sides connect the top plate 42 and base 43. The sides 44 and partitions 45 incline downwardly on converging lines, as indicated in Fig. 1, and they are connected together along their vertical centers at each side of the longitudinal center of the bolster by means of` integral webs 46. (Shown more clearly in Fig. 3.) Between the upper portions of the partitions 45 the strut is formed with the integral sleeve 47, whose sides are connected by webs 48 with the partitions 45, said sleeve 47 being directly below the central opening in the center bearing 40 and the strut below the sleeve 47 being entirely open between the partitions 45 and down to the upper edge of the base 43. l do notlimit my invention to the special construction of strut 22 shown in the drawings; but the construction shown is durable, rigid, eHectual,

and novel in design, and I recommend its use.

and it is of a design adapting it to fully meet y the conditions which may be imposed upon it in service of the roughest kind.

The compression member 20 by reason of its form and integral sides 25 and ianges 26 is adapted to offer the greatest resistance to compression, and said flanges are in the construction presented formed without waste of materials and constitute upwardly-extend ing arches, which strengthen the compression member and increase its resisting power. The end castings 23 afford column-guides and bearings for the carrying-springs and strengthen the ends of the bolster and connect the parts thereof and in conjunction with the inner connections 24 said end castings -connect the compression and tension members at points below the locations for the usual side bearings, whereby in service the strains exerted on the compression member by pressure at the side bearings Will'be transferred to the tension member.

IIO

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What I claim as my invention; and desire tosecure byLetters Patent, is-

l substantially as set forth.

` 2. A bolster comprising a compression member, a tension member, a strut and means connecting said members at the ends of the bolster, said compression member being of pressed steel and having a top and sides, and said sides having laterally-extending flanges along their lower edges which flanges define upwardly-extending arches and are widest at their middle porti-ons, whence theytaper toward the ends of the bolster; substantially as set forth.

SQA bolster comprising a pressed-steel compression member having a top and sides and being flanged upwardly at its ends and laterally along the lower edges of its sides, a tension member formed of a downwardlyarched steel plate whose end portions extend upwardly to the ends of the compression member and thence turn upwardly in the form of flanges to match the flanges on the ends of said compression member, a central strut, and end box-like members fitted upon the ends of the bolster and riveted to said compression and tension members and securing the same together; substantially as set forth.

4. A bolster comprising a pressed-steel compression member having a top and sides and being anged upwardly at its ends and laterally along the lower edges of its sides, a tension member formed of a downwardly-arched steel plate whose end portions extend upwardly to the ends of the compression member and thence turn upwardly in the form of flanges to match the flanges on the ends of said compression member, a central strut, and end box-like cast members fitted upon the ends of the bolster and riveted to said compression and tension members and securing the same together, said end members affording column-guides and inverted pockets for the bearing blocks for the carryingsprings; substantially as set forth.

5. A bolster comprising a pressed-steel compression member having a top and sides and being flanged upwardly at its ends and laterally along the lower edges of its sides, a tension member formed of a downwardlyarched steel plate whose end portions extend upwardly to the ends of the compression member and thence turn upwardly in the form of flanges to match the flanges on the ends of said compression member, a central strut,"endboxlike members fitted upon the ends ofthe bolster, and inner connections at each side of each end of the bolster and riveted to saidcompression and tension members, said end members being alsoriveted to said tension and compression members; substantially as set forth.

6. A bolster comprising a pressed-steel compression member having a top and sides and being flanged upwardly at its ends and laterally along the lower edges of its sides, a tension member formed of a downwardlyarched steel plate whose end portions extend upwardly to the ends of the compression member and thence turn upwardly in the form of flanges to match the fianges on the ends of said compression member, a central strut, end box-like members fitted upon the ends of the bolster, and inner connections at each side of each end of the bolster and riveted to said compression and tension members, said end members being also riveted to said tension and compression members and being of cast metal and aording column-guides and inverted pocketsfor the bearing-blocks for the carrying-springs; substantially as set forth.

7. A bolster comprising a pressed-steel com ression member having a top and sides,

a ownwardly-arched steel-plate tension member whose end portions extend upwardly and are secured to the ends of said compression member, a central strut, end box-like members tted upon the ends of the bolster, and inner connections at each side of each end of the bolster and riveted to said compression .and tension members, said end members being also riveted to said tension and compression members; substantially as set forth.

8. A bolster comprising a pressed-steel com ression member having a top and sides, a ownwardly-arched steel-plate tension member whose end portions extend upwardly and are secured to rthe ends of said compression member, a central strut, end box-like members fitted upon the ends of the bolster, and inner connections at each side of each end of the bolster and riveted to said compression and tension members, said end members being also riveted to said tension and compression members and being of cast metal and affording column guides and inverted pockets for the bearing-blocks for the carrying-springs; substantially as set forth.

9. A bolster comprising a pressed-steel compression member having a top and sides, a downwardly-arched steel-plate tension member whose end portions extend upwardly and are secured to the ends of said compression member, a central strut, end box-like members fitted upon the ends of the bolster, and inner connections at each side of each end of the bolster and riveted to said IOO IlO

compression and tension members, said end In Witness whereof I have hereunto set my members being also riveted to said tension hand, this 31st day of October, 1906, at Berand compression members and having inner l Wick, Pennsylvanie. lugs forming seats for the end portions of the Z HENRY I. FIELD JUNIOR.

Sides of the compression member and for the Witnesses: inclined end portions of said tension member; WILL T. LEWIS,A substantially as set forth. N. W. BLOSS. 

